Advancing towards a veritable calcium-ion battery: CaCo2O4 positive electrode material
By Marta Cabello and Francisco Nacimiento and Jos
Published in Electrochemistry Communications
2016
Abstract
A veritable calcium-ion battery using CaCo2O4 (s.g. P2/m) as a positive electrode, \V2O5\ (s.g. Pmmn) as a negative electrode and calcium perchlorate in acetonitrile as electrolyte solution has been evaluated for the first time. The electrochemical tests, \XRD\ results and X-ray photoelectron spectra confirm that the calcium ion can be firstly removed from CaCo2O4 and then reintercalated, and this material can be an interesting candidate for developing non-aqueous calcium-ion batteries.